main: Refactor __is_redirection

Fixes #942.
Post-release version number bump.
2024-01-06 12:36:52 -06:00 · 2023-12-18 16:07:39 -06:00 · 2023-12-18 16:05:43 -06:00 · 2023-12-18 16:02:40 -06:00 · 2023-10-29 13:25:08 -05:00 · 2023-10-29 13:13:49 -05:00
33 changed files with 832 additions and 184 deletions
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@ -0,0 +1,75 @@
+---
+name: Tests
+on:
+  push:
+    paths-ignore:
+      - '**.md'
+      - '**.png'
+  pull_request:
+    paths-ignore:
+      - '**.md'
+      - '**.png'
+  schedule:
+    - cron: '29 7 * * 1'
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        version:
+          - master
+          - 5.9
+          - 5.8.1
+          - 5.8
+          - 5.7.1
+          - 5.7
+          - 5.6.2
+          - 5.6.1
+          - 5.6
+          - 5.5.1
+          - 5.5
+          - 5.4.2
+          - 5.4.1
+          - 5.4
+          - 5.3.1
+          - 5.3
+          - 5.2
+          - 5.1.1
+          - 5.1
+          - 5.0.8
+          - 5.0.7
+          - 5.0.6
+          - 5.0.5
+          - 5.0.4
+          - 5.0.3
+          - 5.0.2
+          - 5.0.1
+          - 5.0.0
+          - 4.3.17
+          - 4.3.16
+          - 4.3.15
+          - 4.3.14
+          - 4.3.13
+          - 4.3.12
+          - 4.3.11
+    container:
+      image: ghcr.io/zsh-users/zsh:${{ matrix.version }}
+    steps:
+      - uses: actions/checkout@v4
+      - run: install_packages bsdmainutils make procps
+      - run: make test
+
+  notify:
+    runs-on: ubuntu-latest
+    needs: test
+    if: failure() && (github.repository_owner == 'zsh-users')
+    steps:
+      -
+        name: Notify IRC
+        uses: Gottox/irc-message-action@v2
+        with:
+          channel: '#zsh-syntax-highlighting'
+          nickname: zsyh-gh-bot
+          message: '${{ github.ref }} failed tests: https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}'
--- a/.travis.yml
+++ b/.travis.yml
@ -1,56 +0,0 @@
-language: generic
-sudo: required
-
-env:
-  - ZSH=master
-  - ZSH=5.8
-  - ZSH=5.7.1
-  - ZSH=5.7
-  - ZSH=5.6.2
-  - ZSH=5.6.1
-  - ZSH=5.6
-  - ZSH=5.5.1
-  - ZSH=5.5
-  - ZSH=5.4.2
-  - ZSH=5.4.1
-  - ZSH=5.4
-  - ZSH=5.3.1
-  - ZSH=5.3
-  - ZSH=5.2
-  - ZSH=5.1.1
-  - ZSH=5.1
-  - ZSH=5.0.8
-  - ZSH=5.0.7
-  - ZSH=5.0.6
-  - ZSH=5.0.5
-  - ZSH=5.0.4
-  - ZSH=5.0.3
-  - ZSH=5.0.2
-  - ZSH=5.0.1
-  - ZSH=5.0.0
-  - ZSH=4.3.17
-  - ZSH=4.3.16
-  - ZSH=4.3.15
-  - ZSH=4.3.14
-  - ZSH=4.3.13
-  - ZSH=4.3.12
-  - ZSH=4.3.11
-
-script: docker run -v $PWD:/work -w /work zshusers/zsh:${ZSH} /bin/sh -c 'install_packages make procps bsdmainutils && make test'
-
-notifications:
-  webhooks:
-    urls:
-      - https://webhooks.gitter.im/e/367e241cdea60cb2070b
-    on_success: change
-    on_failure: always
-    on_start: never
-  irc:
-    channels:
-      - "chat.freenode.net#zsh-syntax-highlighting"
-    on_success: change
-    on_failure: always
-    on_start: never
-    use_notice: true
-    template:
-      - "%{repository}/%{branch}#%{build_number}: %{message} Changes : %{compare_url} | Build : %{build_url}"
--- a/.version
+++ b/.version
@ -1 +1 @@
-0.8.0-alpha2-dev
+0.8.1-dev
--- a/HACKING.md
+++ b/HACKING.md
@ -95,5 +95,5 @@ zstyle ':completion:*:*:*:*:globbed-files' ignored-patterns {'*/',}zsh-syntax-hi
 IRC channel
 -----------

-We're on #zsh-syntax-highlighting on freenode.
+We're on #zsh-syntax-highlighting on Libera.Chat.

--- a/INSTALL.md
+++ b/INSTALL.md
@ -3,31 +3,67 @@ How to install

 ### Using packages

+First, install the package:
+
 * Arch Linux: [community/zsh-syntax-highlighting][arch-package] / [AUR/zsh-syntax-highlighting-git][AUR-package]
 * Debian: `zsh-syntax-highlighting` package [in `stretch`][debian-package] (or in [OBS repository][obs-repository])
 * Fedora: [zsh-syntax-highlighting package][fedora-package-alt] in Fedora 24+ (or in [OBS repository][obs-repository])
 * FreeBSD: `pkg install zsh-syntax-highlighting` (port name: [`shells/zsh-syntax-highlighting`][freebsd-port])
-* Gentoo: [mv overlay][gentoo-overlay]
-* Mac OS X / Homebrew: [brew install zsh-syntax-highlighting][brew-package]
-* Ubuntu: `zsh-syntax-highlighting` package [in Xenial][ubuntu-package] (or in [OBS repository][obs-repository])
-* RHEL / CentOS / Scientific Linux: `zsh-syntax-highlighting` package in [OBS repository][obs-repository]
+* Gentoo: [app-shells/zsh-syntax-highlighting][gentoo-repository]
+* Mac OS X / Homebrew: `brew install zsh-syntax-highlighting` ([formula][brew-package])
+* NetBSD: `pkg_add zsh-syntax-highlighting` (port name: [`shells/zsh-syntax-highlighting`][netbsd-port])
+* OpenBSD: `pkg_add zsh-syntax-highlighting` (port name: [`shells/zsh-syntax-highlighting`][openbsd-port])
 * openSUSE / SLE: `zsh-syntax-highlighting` package in [OBS repository][obs-repository]
+* RHEL / CentOS / Scientific Linux: `zsh-syntax-highlighting` package in [OBS repository][obs-repository]
+* Ubuntu: `zsh-syntax-highlighting` package [in Xenial][ubuntu-package] (or in [OBS repository][obs-repository])
 * Void Linux: `zsh-syntax-highlighting package` [in XBPS][void-package]

 [arch-package]: https://www.archlinux.org/packages/zsh-syntax-highlighting
 [AUR-package]: https://aur.archlinux.org/packages/zsh-syntax-highlighting-git
+[brew-package]: https://github.com/Homebrew/homebrew-core/blob/master/Formula/z/zsh-syntax-highlighting.rb
 [debian-package]: https://packages.debian.org/zsh-syntax-highlighting
-[freebsd-port]: http://www.freshports.org/textproc/zsh-syntax-highlighting/
-[gentoo-overlay]: http://gpo.zugaina.org/app-shells/zsh-syntax-highlighting
-[brew-package]: https://github.com/Homebrew/homebrew-core/blob/master/Formula/zsh-syntax-highlighting.rb
-[ubuntu-package]: https://launchpad.net/ubuntu/+source/zsh-syntax-highlighting
 [fedora-package]: https://apps.fedoraproject.org/packages/zsh-syntax-highlighting
 [fedora-package-alt]: https://bodhi.fedoraproject.org/updates/?packages=zsh-syntax-highlighting
+[freebsd-port]: https://www.freshports.org/textproc/zsh-syntax-highlighting/
+[gentoo-repository]: https://packages.gentoo.org/packages/app-shells/zsh-syntax-highlighting
+[netbsd-port]: http://cvsweb.netbsd.org/bsdweb.cgi/pkgsrc/shells/zsh-syntax-highlighting/
 [obs-repository]: https://software.opensuse.org/download.html?project=shells%3Azsh-users%3Azsh-syntax-highlighting&package=zsh-syntax-highlighting
+[openbsd-port]: https://cvsweb.openbsd.org/ports/shells/zsh-syntax-highlighting/
+[ubuntu-package]: https://launchpad.net/ubuntu/+source/zsh-syntax-highlighting
 [void-package]: https://github.com/void-linux/void-packages/tree/master/srcpkgs/zsh-syntax-highlighting

 See also [repology's cross-distro index](https://repology.org/metapackage/zsh-syntax-highlighting/versions)

+Second, enable zsh-syntax-highlighting by sourcing the script. Running this command on the terminal will add the source line to the end of your .zshrc:
+
+* On most Linux distributions (except perhaps NixOS):
+
+    ```zsh
+    echo "source /usr/share/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh" >> ${ZDOTDIR:-$HOME}/.zshrc
+    ```
+
+* NetBSD and OpenBSD:
+
+    ```zsh
+    echo "source /usr/local/share/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh" >> ${ZDOTDIR:-$HOME}/.zshrc
+    ```
+
+* Mac OS X / Homebrew:
+
+    ```zsh
+    echo "source $(brew --prefix)/share/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh" >> ${ZDOTDIR:-$HOME}/.zshrc
+    ```
+
+Then restart zsh (such as by opening a new instance of your terminal emulator).
+
+ Alternatively, add the `source` command manually **at the end** of your `.zshrc`:
+
+* On most Linux distributions (except perhaps NixOS):
+`source /usr/share/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh`
+* NetBSD and OpenBSD:
+`source /usr/local/share/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh`
+
+Then restart zsh.

 ### In your ~/.zshrc

@ -71,6 +107,12 @@ This list is incomplete as there are too many
 Add `antigen bundle zsh-users/zsh-syntax-highlighting` as the last bundle in
 your `.zshrc`.

+#### [Fig](https://fig.io)
+
+Click the `Install Plugin` button on the [Fig plugin page][fig-plugin].
+
+[fig-plugin]: https://fig.io/plugins/other/zsh-syntax-highlighting
+
 #### [Oh-my-zsh](https://github.com/robbyrussell/oh-my-zsh)

 1. Clone this repository in oh-my-zsh's plugins directory:
@ -98,15 +140,15 @@ Zsh-syntax-highlighting is included with Prezto. See the

 Add `zgen load zsh-users/zsh-syntax-highlighting` to the end of your `.zshrc`.

+#### [zinit](https://github.com/zdharma-continuum/zinit)
+
+Add `zinit light zsh-users/zsh-syntax-highlighting` to the end of your
+`.zshrc`.
+
 #### [zplug](https://github.com/zplug/zplug)

 Add `zplug "zsh-users/zsh-syntax-highlighting", defer:2` to your `.zshrc`.

-#### [zplugin](https://github.com/psprint/zplugin)
-
-Add `zplugin load zsh-users/zsh-syntax-highlighting` to the end of your
-`.zshrc`.
-

 ### System-wide installation

--- a/README.md
+++ b/README.md
@ -1,12 +1,12 @@
-zsh-syntax-highlighting [![Build Status][build-status-image]][build-status-travis]
+zsh-syntax-highlighting [![Build Status][build-status-image]][build-status]
 =======================

 **[Fish shell][fish]-like syntax highlighting for [Zsh][zsh].**

 *Requirements: zsh 4.3.11+.*

-[fish]: http://www.fishshell.com/
-[zsh]: http://www.zsh.org/
+[fish]: https://fishshell.com/
+[zsh]: https://www.zsh.org/

 This package provides syntax highlighting for the shell zsh.  It enables
 highlighting of commands whilst they are typed at a zsh prompt into an
@ -73,7 +73,7 @@ enough information to allow computing the highlighting correctly.)

 See issues [#288][i288] and [#415][i415] for details.

-[zshzle-Character-Highlighting]: http://zsh.sourceforge.net/Doc/Release/Zsh-Line-Editor.html#Character-Highlighting
+[zshzle-Character-Highlighting]: https://zsh.sourceforge.io/Doc/Release/Zsh-Line-Editor.html#Character-Highlighting
 [i288]: https://github.com/zsh-users/zsh-syntax-highlighting/pull/288
 [i415]: https://github.com/zsh-users/zsh-syntax-highlighting/pull/415

@ -93,5 +93,5 @@ Syntax highlighting is done by pluggable highlighter scripts.  See the
 [documentation on highlighters](docs/highlighters.md) for details and
 configuration settings.

-[build-status-image]: https://travis-ci.org/zsh-users/zsh-syntax-highlighting.svg?branch=master
-[build-status-travis]: https://travis-ci.org/zsh-users/zsh-syntax-highlighting
+[build-status]: https://github.com/zsh-users/zsh-syntax-highlighting/actions
+[build-status-image]: https://github.com/zsh-users/zsh-syntax-highlighting/workflows/Tests/badge.svg
--- a/changelog.md
+++ b/changelog.md
@ -1,15 +1,24 @@
 # Changes in HEAD


+- Highlight `&>` `>&|` `>&!` `&>|` and `&>!` as redirection.
+  [#942]
+
+
+# Changes in 0.8.0
+
+This is a stable bugfix and feature release.  Major new features and changes include:
+
+
 ## Changes fixed as part of the switch to zle-line-pre-redraw

 The changes in this section were fixed by switching to a `zle-line-pre-redraw`-based
 implementation.

 Note: The new implementation will only be used on future zsh releases,
-numbered 5.8.0.3 and newer, due to interoperability issues with other plugins
+numbered 5.8.1.1 and newer, due to interoperability issues with other plugins
 (issues #418 and #579).  The underlying zsh feature has been available since
-zsh 5.2.
+zsh 5.3.

 Whilst under development, the new implementation was known as the
 "feature/redrawhook" topic branch.
@ -52,6 +61,36 @@ Whilst under development, the new implementation was known as the
  [#632]


+## Other changes
+
+- Add issue #712 to the previous release's changelog (hereinafter).
+
+- Fix highlighting when using an alias twice inside another alias
+  [#769, #775]
+
+- Remove lint warning for `env` followed by a pipe
+  [#797]
+
+- Recognize `proxychains` as a precommand
+  [#814, #914]
+
+- Honor shwordsplit when expanding parameters
+  [#687, #818]
+
+- Skip highlighting when keys are still pending in more cases
+  [#835]
+
+- Recognize `grc` as a precommand
+
+- Recognize `torsocks` and `torift` as precommands
+  [#898]
+
+- Recognize `cpulimit` as a precommand
+  [#897]
+
+- Recognize `ktrace` as a precommand
+
+
 # Changes in 0.8.0-alpha1-pre-redrawhook

 ## Notice about an improbable-but-not-impossible forward incompatibility
@ -84,8 +123,8 @@ to issue #418.

    (#90, part of #245 (feature/redrawhook))

-[zshcompsys-Standard-Styles]: http://zsh.sourceforge.net/Doc/Release/Completion-System.html#Standard-Styles
-[zshcompsys-Standard-Styles-format]: http://zsh.sourceforge.net/Doc/Release/Completion-System.html#index-format_002c-completion-style
+[zshcompsys-Standard-Styles]: https://zsh.sourceforge.io/Doc/Release/Completion-System.html#Standard-Styles
+[zshcompsys-Standard-Styles-format]: https://zsh.sourceforge.io/Doc/Release/Completion-System.html#index-format_002c-completion-style
  


@ -163,6 +202,8 @@ to issue #418.

 - Recognize `env` as a precommand (e.g., `env FOO=bar ls`)

+- Recognize `ionice` as a precommand
+
 - Recognize `strace` as a precommand

 - Fix an error message on stderr before every prompt when the `WARN_NESTED_VAR` zsh option is set:
@ -187,6 +228,9 @@ to issue #418.

 - Improve performance of the `brackets` highlighter.

+- Fix highlighting of pre-command redirections (e.g., the `$fn` in `<$fn cat`)
+  [#712]
+

 # Changes in version 0.7.1

@ -281,7 +325,7 @@ This is a stable release, featuring bugfixes and minor improvements.
 - The `isearch` and `suffix` [`$zle_highlight` settings][zshzle-Character-Highlighting].
  (79e4d3d12405, 15db71abd0cc, b56ee542d619; requires zsh 5.3 for `$ISEARCHMATCH_ACTIVE` / `$SUFFIX_ACTIVE` support)

-[zshzle-Character-Highlighting]: http://zsh.sourceforge.net/Doc/Release/Zsh-Line-Editor.html#Character-Highlighting
+[zshzle-Character-Highlighting]: https://zsh.sourceforge.io/Doc/Release/Zsh-Line-Editor.html#Character-Highlighting

 - Possible history expansions in double-quoted strings.
  (76ea9e1df316)
@ -727,7 +771,7 @@ in this area.

 ## Developer-visible changes:

- Test harness converted to [TAP](http://testanything.org/tap-specification.html) format
+- Test harness converted to [TAP](https://testanything.org/tap-specification.html) format
  (d99aa58aaaef, et seq)

 - Run each test in a separate subprocess, isolating them from each other
--- a/docs/highlighters.md
+++ b/docs/highlighters.md
@ -3,19 +3,21 @@ zsh-syntax-highlighting / highlighters

 Syntax highlighting is done by pluggable highlighters:

-* `main` - the base highlighter, and the only one [active by default][1].
-* `brackets` - [matches brackets][2] and parenthesis.
-* `pattern` - matches [user-defined patterns][3].
-* `cursor` - matches [the cursor position][4].
-* `root` - highlights the whole command line [if the current user is root][5].
-* `line` - applied to [the whole command line][6].
+* `main` - the base highlighter, and the only one [active by default][main].
+* `brackets` - [matches brackets][brackets] and parenthesis.
+* `pattern` - matches [user-defined patterns][pattern].
+* `regexp` - matches [user-defined regular expressions][regexp].
+* `cursor` - matches [the cursor position][cursor].
+* `root` - highlights the whole command line [if the current user is root][root].
+* `line` - applied to [the whole command line][line].

-[1]: highlighters/main.md
-[2]: highlighters/brackets.md
-[3]: highlighters/pattern.md
-[4]: highlighters/cursor.md
-[5]: highlighters/root.md
-[6]: highlighters/line.md
+[main]: highlighters/main.md
+[brackets]: highlighters/brackets.md
+[pattern]: highlighters/pattern.md
+[regexp]: highlighters/regexp.md
+[cursor]: highlighters/cursor.md
+[root]: highlighters/root.md
+[line]: highlighters/line.md


 Highlighter-independent settings
@ -25,10 +27,10 @@ By default, all command lines are highlighted.  However, it is possible to
 prevent command lines longer than a fixed number of characters from being
 highlighted by setting the variable `${ZSH_HIGHLIGHT_MAXLENGTH}` to the maximum
 length (in characters) of command lines to be highlighter.  This is useful when
-editing very long comand lines (for example, with the [`fned`][fned] utility
+editing very long command lines (for example, with the [`fned`][fned] utility
 function).  Example:

-[fned]: http://zsh.sourceforge.net/Doc/Release/User-Contributions.html#index-zed
+[fned]: https://zsh.sourceforge.io/Doc/Release/User-Contributions.html#index-zed

 ```zsh
 ZSH_HIGHLIGHT_MAXLENGTH=512
@ -38,16 +40,14 @@ ZSH_HIGHLIGHT_MAXLENGTH=512
 How to activate highlighters
 ----------------------------

-To activate an highlighter, add it to the `ZSH_HIGHLIGHT_HIGHLIGHTERS` array in
-`~/.zshrc`, for example:
+To activate an highlighter, add it to the `ZSH_HIGHLIGHT_HIGHLIGHTERS` array.
+By default `ZSH_HIGHLIGHT_HIGHLIGHTERS` is `(main)`. For example to activate
+`brackets`, `pattern`, and `cursor` highlighters, in `~/.zshrc` do:

 ```zsh
-ZSH_HIGHLIGHT_HIGHLIGHTERS=(main brackets pattern cursor)
+ZSH_HIGHLIGHT_HIGHLIGHTERS+=(brackets pattern cursor)
 ```

-By default, `$ZSH_HIGHLIGHT_HIGHLIGHTERS` is unset and only the `main`
-highlighter is active.
-

 How to tweak highlighters
 -------------------------
@ -59,7 +59,7 @@ same as the syntax of "types of highlighting" of the zsh builtin
 `$zle_highlight` array, which is documented in [the `zshzle(1)` manual
 page][zshzle-Character-Highlighting].

-[zshzle-Character-Highlighting]: http://zsh.sourceforge.net/Doc/Release/Zsh-Line-Editor.html#Character-Highlighting
+[zshzle-Character-Highlighting]: https://zsh.sourceforge.io/Doc/Release/Zsh-Line-Editor.html#Character-Highlighting

 Some highlighters support additional configuration parameters; see each
 highlighter's documentation for details and examples.
--- a/docs/highlighters/brackets.md
+++ b/docs/highlighters/brackets.md
@ -28,4 +28,4 @@ The syntax for values is the same as the syntax of "types of highlighting" of
 the zsh builtin `$zle_highlight` array, which is documented in [the `zshzle(1)`
 manual page][zshzle-Character-Highlighting].

-[zshzle-Character-Highlighting]: http://zsh.sourceforge.net/Doc/Release/Zsh-Line-Editor.html#Character-Highlighting
+[zshzle-Character-Highlighting]: https://zsh.sourceforge.io/Doc/Release/Zsh-Line-Editor.html#Character-Highlighting
--- a/docs/highlighters/cursor.md
+++ b/docs/highlighters/cursor.md
@ -21,4 +21,4 @@ The syntax for values is the same as the syntax of "types of highlighting" of
 the zsh builtin `$zle_highlight` array, which is documented in [the `zshzle(1)`
 manual page][zshzle-Character-Highlighting].

-[zshzle-Character-Highlighting]: http://zsh.sourceforge.net/Doc/Release/Zsh-Line-Editor.html#Character-Highlighting
+[zshzle-Character-Highlighting]: https://zsh.sourceforge.io/Doc/Release/Zsh-Line-Editor.html#Character-Highlighting
--- a/docs/highlighters/line.md
+++ b/docs/highlighters/line.md
@ -21,4 +21,4 @@ The syntax for values is the same as the syntax of "types of highlighting" of
 the zsh builtin `$zle_highlight` array, which is documented in [the `zshzle(1)`
 manual page][zshzle-Character-Highlighting].

-[zshzle-Character-Highlighting]: http://zsh.sourceforge.net/Doc/Release/Zsh-Line-Editor.html#Character-Highlighting
+[zshzle-Character-Highlighting]: https://zsh.sourceforge.io/Doc/Release/Zsh-Line-Editor.html#Character-Highlighting
--- a/docs/highlighters/main.md
+++ b/docs/highlighters/main.md
@ -116,6 +116,6 @@ of that (new) kind will be highlighted by the style `arg0_$kind`,
 where `$kind` is the output of `type -w` on the new kind of command word.  If that
 style is not defined, then the style `arg0` will be used instead.

-[zshmisc-Simple-Commands-And-Pipelines]: http://zsh.sourceforge.net/Doc/Release/Shell-Grammar.html#Simple-Commands-_0026-Pipelines
+[zshmisc-Simple-Commands-And-Pipelines]: https://zsh.sourceforge.io/Doc/Release/Shell-Grammar.html#Simple-Commands-_0026-Pipelines

-[zshzle-Character-Highlighting]: http://zsh.sourceforge.net/Doc/Release/Zsh-Line-Editor.html#Character-Highlighting
+[zshzle-Character-Highlighting]: https://zsh.sourceforge.io/Doc/Release/Zsh-Line-Editor.html#Character-Highlighting
--- a/docs/highlighters/pattern.md
+++ b/docs/highlighters/pattern.md
@ -21,4 +21,4 @@ The syntax for values is the same as the syntax of "types of highlighting" of
 the zsh builtin `$zle_highlight` array, which is documented in [the `zshzle(1)`
 manual page][zshzle-Character-Highlighting].

-[zshzle-Character-Highlighting]: http://zsh.sourceforge.net/Doc/Release/Zsh-Line-Editor.html#Character-Highlighting
+[zshzle-Character-Highlighting]: https://zsh.sourceforge.io/Doc/Release/Zsh-Line-Editor.html#Character-Highlighting
--- a/docs/highlighters/regexp.md
+++ b/docs/highlighters/regexp.md
@ -12,11 +12,44 @@ To use this highlighter, associate regular expressions with styles in the

 ```zsh
 typeset -A ZSH_HIGHLIGHT_REGEXP
-ZSH_HIGHLIGHT_REGEXP+=('\bsudo\b' fg=123,bold)
+ZSH_HIGHLIGHT_REGEXP+=('^rm .*' fg=red,bold)
 ```

-This will highlight "sudo" only as a complete word, i.e., "sudo cmd", but not
-"sudoedit"
+This will highlight lines that start with a call to the `rm` command.
+
+The regular expressions flavour used is [PCRE][pcresyntax] when the
+`RE_MATCH_PCRE` option is set and POSIX Extended Regular Expressions (ERE),
+as implemented by the platform's C library, otherwise.  For details on the
+latter, see [the `zsh/regex` module's documentation][MAN_ZSH_REGEX] and the
+`regcomp(3)` and `re_format(7)` manual pages on your system.
+
+For instance, to highlight `sudo` only as a complete word, i.e., `sudo cmd`,
+but not `sudoedit`, one might use:
+
+* When the `RE_MATCH_PCRE` is set:
+
+    ```zsh
+    typeset -A ZSH_HIGHLIGHT_REGEXP
+    ZSH_HIGHLIGHT_REGEXP+=('\bsudo\b' fg=123,bold)
+    ```
+
+* When the `RE_MATCH_PCRE` is unset, on platforms with GNU `libc` (e.g., many GNU/Linux distributions):
+
+    ```zsh
+    typeset -A ZSH_HIGHLIGHT_REGEXP
+    ZSH_HIGHLIGHT_REGEXP+=('\<sudo\>' fg=123,bold)
+    ```
+
+* When the `RE_MATCH_PCRE` is unset, on BSD-based platforms (e.g., macOS):
+
+    ```zsh
+    typeset -A ZSH_HIGHLIGHT_REGEXP
+    ZSH_HIGHLIGHT_REGEXP+=('[[:<:]]sudo[[:>:]]' fg=123,bold)
+    ```
+
+Note, however, that PCRE and POSIX ERE have a large common subset:
+for instance, the regular expressions `[abc]`, `a*`, and `(a|b)` have the same
+meaning in both flavours.

 The syntax for values is the same as the syntax of "types of highlighting" of
 the zsh builtin `$zle_highlight` array, which is documented in [the `zshzle(1)`
@ -25,6 +58,8 @@ manual page][zshzle-Character-Highlighting].
 See also: [regular expressions tutorial][perlretut], zsh regexp operator `=~`
 in [the `zshmisc(1)` manual page][zshmisc-Conditional-Expressions]

-[zshzle-Character-Highlighting]: http://zsh.sourceforge.net/Doc/Release/Zsh-Line-Editor.html#Character-Highlighting
-[perlretut]: http://perldoc.perl.org/perlretut.html
-[zshmisc-Conditional-Expressions]: http://zsh.sourceforge.net/Doc/Release/Conditional-Expressions.html#Conditional-Expressions
+[zshzle-Character-Highlighting]: https://zsh.sourceforge.io/Doc/Release/Zsh-Line-Editor.html#Character-Highlighting
+[perlretut]: https://perldoc.perl.org/perlretut
+[zshmisc-Conditional-Expressions]: https://zsh.sourceforge.io/Doc/Release/Conditional-Expressions.html#Conditional-Expressions
+[MAN_ZSH_REGEX]: https://zsh.sourceforge.io/Doc/Release/Zsh-Modules.html#The-zsh_002fregex-Module
+[pcresyntax]: https://www.pcre.org/original/doc/html/pcresyntax.html
--- a/docs/highlighters/root.md
+++ b/docs/highlighters/root.md
@ -22,4 +22,4 @@ The syntax for values is the same as the syntax of "types of highlighting" of
 the zsh builtin `$zle_highlight` array, which is documented in [the `zshzle(1)`
 manual page][zshzle-Character-Highlighting].

-[zshzle-Character-Highlighting]: http://zsh.sourceforge.net/Doc/Release/Zsh-Line-Editor.html#Character-Highlighting
+[zshzle-Character-Highlighting]: https://zsh.sourceforge.io/Doc/Release/Zsh-Line-Editor.html#Character-Highlighting
--- a/highlighters/main/main-highlighter.zsh
+++ b/highlighters/main/main-highlighter.zsh
@ -76,7 +76,7 @@ _zsh_highlight_main_add_region_highlight() {
  integer start=$1 end=$2
  shift 2

-  if (( in_alias )); then
+  if (( $#in_alias )); then
    [[ $1 == unknown-token ]] && alias_style=unknown-token
    return
  fi
@ -254,10 +254,9 @@ _zsh_highlight_main__is_runnable() {
 _zsh_highlight_main__is_redirection() {
  # A redirection operator token:
  # - starts with an optional single-digit number;
-  # - then, has a '<' or '>' character;
-  # - is not a process substitution [<(...) or >(...)].
-  # - is not a numeric glob <->
-  [[ $1 == (<0-9>|)(\<|\>)* ]] && [[ $1 != (\<|\>)$'\x28'* ]] && [[ $1 != *'<'*'-'*'>'* ]]
+  # - is one of the tokens listed in zshmisc(1)
+  # - however (z) normalizes ! to |
+  [[ ${1#[0-9]} == (\<|\<\>|(\>|\>\>)(|\|)|\<\<(|-)|\<\<\<|\<\&|\&\<|(\>|\>\>)\&(|\|)|\&(\>|\>\>)(|\||\!)) ]]
 }

 # Resolve alias.
@ -349,6 +348,7 @@ _zsh_highlight_highlighter_main_paint()
    'noglob' ''
    # 'time' and 'nocorrect' shouldn't be added here; they're reserved words, not precommands.

+    # miscellaneous commands
    'doas' aCu:Lns # as of OpenBSD's doas(1) dated September 4, 2016
    'nice' n: # as of current POSIX spec
    'pkexec' '' # doesn't take short options; immune to #121 because it's usually not passed --option flags
@ -362,21 +362,21 @@ _zsh_highlight_highlighter_main_paint()
    'env' u:i
    'ionice' cn:t:pPu # util-linux 2.33.1-0.1
    'strace' IbeaosXPpEuOS:ACdfhikqrtTvVxyDc # strace 4.26-0.2
-
-    # As of OpenSSH 8.1p1
-    'ssh-agent' aEPt:csDd:k
-    # suckless-tools v44
-    # Argumentless flags that can't be followed by a command: -v
-    'tabbed' gnprtTuU:cdfhs
-
-    # moreutils 0.62-1
-    'chronic' :ev
-    'ifne' :n
-
+    'proxychains' f:q # proxychains 4.4.0
+    'torsocks' idq:upaP # Torsocks 2.3.0
+    'torify' idq:upaP # Torsocks 2.3.0
+    'ssh-agent' aEPt:csDd:k # As of OpenSSH 8.1p1
+    'tabbed' gnprtTuU:cdfhs:v # suckless-tools v44
+    'chronic' :ev # moreutils 0.62-1
+    'ifne' :n # moreutils 0.62-1
+    'grc' :se # grc - a "generic colouriser" (that's their spelling, not mine)
+    'cpulimit' elp:ivz # cpulimit 0.2
+    'ktrace' fgpt:aBCcdiT
  )
  # Commands that would need to skip one positional argument:
  #    flock
  #    ssh
+  #    _wanted (skip two)

  if [[ $zsyh_user_options[ignorebraces] == on || ${zsyh_user_options[ignoreclosebraces]:-off} == on ]]; then
    local right_brace_is_recognised_everywhere=false
@ -476,7 +476,11 @@ _zsh_highlight_main_highlighter__try_expand_parameter()
            ;;
          (*)
            # scalar, presumably
-            words=( ${(P)MATCH} )
+            if [[ $zsyh_user_options[shwordsplit] == on ]]; then
+              words=( ${(P)=MATCH} )
+            else
+              words=( ${(P)MATCH} )
+            fi
            ;;
        esac
        reply=( "${words[@]}" )
@ -498,17 +502,18 @@ _zsh_highlight_main_highlighter__try_expand_parameter()
 _zsh_highlight_main_highlighter_highlight_list()
 {
  integer start_pos end_pos=0 buf_offset=$1 has_end=$3
-  # alias_style is the style to apply to an alias once in_alias=0
+  # alias_style is the style to apply to an alias once $#in_alias == 0
  #     Usually 'alias' but set to 'unknown-token' if any word expanded from
  #     the alias would be highlighted as unknown-token
  # param_style is analogous for parameter expansions
  local alias_style param_style last_arg arg buf=$4 highlight_glob=true saw_assignment=false style
  local in_array_assignment=false # true between 'a=(' and the matching ')'
-  # in_alias is equal to the number of shifts needed until arg=args[1] pops an
-  #     arg from BUFFER and not added by an alias.
+  # in_alias is an array of integers with each element equal to the number
+  #     of shifts needed until arg=args[1] pops an arg from the next level up
+  #     alias or from BUFFER.
  # in_param is analogous for parameter expansions
-  integer in_alias=0 in_param=0 len=$#buf
-  local -a match mbegin mend list_highlights
+  integer in_param=0 len=$#buf
+  local -a in_alias match mbegin mend list_highlights
  # seen_alias is a map of aliases already seen to avoid loops like alias a=b b=a
  local -A seen_alias
  # Pattern for parameter names
@ -596,12 +601,23 @@ _zsh_highlight_main_highlighter_highlight_list()
    last_arg=$arg
    arg=$args[1]
    shift args
-    if (( in_alias )); then
-      (( in_alias-- ))
-      if (( in_alias == 0 )); then
+    if (( $#in_alias )); then
+      (( in_alias[1]-- ))
+      # Remove leading 0 entries
+      in_alias=($in_alias[$in_alias[(i)<1->],-1])
+      if (( $#in_alias == 0 )); then
        seen_alias=()
        # start_pos and end_pos are of the alias (previous $arg) here
        _zsh_highlight_main_add_region_highlight $start_pos $end_pos $alias_style
+      else
+        # We can't unset keys that contain special characters (] \ and some others).
+        # More details: https://www.zsh.org/workers/43269
+        (){
+          local alias_name
+          for alias_name in ${(k)seen_alias[(R)<$#in_alias->]}; do
+            seen_alias=("${(@kv)seen_alias[(I)^$alias_name]}")
+          done
+        }
      fi
    fi
    if (( in_param )); then
@ -637,9 +653,9 @@ _zsh_highlight_main_highlighter_highlight_list()
      fi
    fi

-    if (( in_alias == 0 && in_param == 0 )); then
+    if (( $#in_alias == 0 && in_param == 0 )); then
      # Compute the new $start_pos and $end_pos, skipping over whitespace in $buf.
-      [[ "$proc_buf" = (#b)(#s)(([ $'\t']|[\\]$'\n')#)(?|)* ]]
+      [[ "$proc_buf" = (#b)(#s)(''([ $'\t']|[\\]$'\n')#)(?|)* ]]
      # The first, outer parenthesis
      integer offset="${#match[1]}"
      (( start_pos = end_pos + offset ))
@ -693,11 +709,10 @@ _zsh_highlight_main_highlighter_highlight_list()
      if [[ $res == "alias" ]]; then
        # Mark insane aliases as unknown-token (cf. #263).
        if [[ $arg == ?*=* ]]; then
-          (( in_alias == 0 )) && in_alias=1
          _zsh_highlight_main_add_region_highlight $start_pos $end_pos unknown-token
          continue
        fi
-        seen_alias[$arg]=1
+        seen_alias[$arg]=$#in_alias
        _zsh_highlight_main__resolve_alias $arg
        local -a alias_args
        # Elision is desired in case alias x=''
@ -707,15 +722,15 @@ _zsh_highlight_main_highlighter_highlight_list()
          alias_args=(${(z)REPLY})
        fi
        args=( $alias_args $args )
-        if (( in_alias == 0 )); then
+        if (( $#in_alias == 0 )); then
          alias_style=alias
-          # Add one because we will in_alias-- on the next loop iteration so
-          # this iteration should be considered in in_alias as well
-          (( in_alias += $#alias_args + 1 ))
        else
-          # This arg is already included in the count, so no need to + 1.
-          (( in_alias += $#alias_args ))
+          # Transfer the count of this arg to the new element about to be appended.
+          (( in_alias[1]-- ))
        fi
+        # Add one because we will in_alias[1]-- on the next loop iteration so
+        # this iteration should be considered in in_alias as well
+        in_alias=( $(($#alias_args + 1)) $in_alias )
        (( in_redirection++ )) # Stall this arg
        continue
      else
@ -728,7 +743,7 @@ _zsh_highlight_main_highlighter_highlight_list()
    # Analyse the current word.
    if _zsh_highlight_main__is_redirection $arg ; then
      if (( in_redirection == 1 )); then
-        # Two consecuive redirection operators is an error.
+        # Two consecutive redirection operators is an error.
        _zsh_highlight_main_add_region_highlight $start_pos $end_pos unknown-token
      else
        in_redirection=2
@ -854,7 +869,7 @@ _zsh_highlight_main_highlighter_highlight_list()
        style=commandseparator
      elif [[ $this_word == *':start:'* ]] && [[ $arg == $'\n' ]]; then
        style=commandseparator
-      elif [[ $this_word == *':start:'* ]] && [[ $arg == ';' ]] && (( in_alias )); then
+      elif [[ $this_word == *':start:'* ]] && [[ $arg == ';' ]] && (( $#in_alias )); then
        style=commandseparator 
      else
        # Empty commands (semicolon follows nothing) are valid syntax.
@ -879,6 +894,14 @@ _zsh_highlight_main_highlighter_highlight_list()
        next_word=':start:'
        highlight_glob=true
        saw_assignment=false
+        (){
+          local alias_name
+          for alias_name in ${(k)seen_alias[(R)<$#in_alias->]}; do
+            # We can't unset keys that contain special characters (] \ and some others).
+            # More details: https://www.zsh.org/workers/43269
+            seen_alias=("${(@kv)seen_alias[(I)^$alias_name]}")
+          done
+        }
        if [[ $arg != '|' && $arg != '|&' ]]; then
          next_word+=':start_of_pipeline:'
        fi
@ -902,8 +925,8 @@ _zsh_highlight_main_highlighter_highlight_list()
        next_word=${next_word//:regular:/}
        next_word+=':sudo_opt:'
        next_word+=':start:'
-        if [[ $arg == 'exec' ]]; then
-          # To allow "exec 2>&1;" where there's no command word
+        if [[ $arg == 'exec' || $arg == 'env' ]]; then
+          # To allow "exec 2>&1;" and "env | grep" where there's no command word
          next_word+=':regular:'
        fi
      else
@ -1146,7 +1169,7 @@ _zsh_highlight_main_highlighter_highlight_list()
    fi
    _zsh_highlight_main_add_region_highlight $start_pos $end_pos $style
  done
-  (( in_alias == 1 )) && in_alias=0 _zsh_highlight_main_add_region_highlight $start_pos $end_pos $alias_style
+  (( $#in_alias )) && in_alias=() _zsh_highlight_main_add_region_highlight $start_pos $end_pos $alias_style
  (( in_param == 1 )) && in_param=0 _zsh_highlight_main_add_region_highlight $start_pos $end_pos $param_style
  [[ "$proc_buf" = (#b)(#s)(([[:space:]]|\\$'\n')#) ]]
  REPLY=$(( end_pos + ${#match[1]} - 1 ))
@ -1257,7 +1280,7 @@ _zsh_highlight_main_highlighter_check_path()

  # If this word ends the buffer, check if it's the prefix of a valid path.
  if (( has_end && (len == end_pos) )) &&
-     (( ! in_alias )) &&
+     (( ! $#in_alias )) &&
     [[ $WIDGET != zle-line-finish ]]; then
    # TODO: When we've dropped support for pre-5.0.6 zsh, use the *(Y1) glob qualifier here.
    local -a tmp
--- a/highlighters/main/test-data/alias-brackets.zsh
+++ b/highlighters/main/test-data/alias-brackets.zsh
@ -0,0 +1,41 @@
+#!/usr/bin/env zsh
+# -------------------------------------------------------------------------------------------------
+# Copyright (c) 2021 zsh-syntax-highlighting contributors
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification, are permitted
+# provided that the following conditions are met:
+#
+#  * Redistributions of source code must retain the above copyright notice, this list of conditions
+#    and the following disclaimer.
+#  * Redistributions in binary form must reproduce the above copyright notice, this list of
+#    conditions and the following disclaimer in the documentation and/or other materials provided
+#    with the distribution.
+#  * Neither the name of the zsh-syntax-highlighting contributors nor the names of its contributors
+#    may be used to endorse or promote products derived from this software without specific prior
+#    written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+# FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+# IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+# -------------------------------------------------------------------------------------------------
+# -*- mode: zsh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*-
+# vim: ft=zsh sw=2 ts=2 et
+# -------------------------------------------------------------------------------------------------
+
+# Have to use cat here as it must be a command that exists.
+# Otherwise, the test would fail with the first token being recognized
+# as an "unknown-token".
+alias ]=cat
+
+BUFFER='] /'
+
+expected_region_highlight=(
+  '1 1 alias' # ]
+  '3 3 path' # /
+)
--- a/highlighters/main/test-data/alias-reuse1.zsh
+++ b/highlighters/main/test-data/alias-reuse1.zsh
@ -0,0 +1,39 @@
+#!/usr/bin/env zsh
+# -------------------------------------------------------------------------------------------------
+# Copyright (c) 2020 zsh-syntax-highlighting contributors
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification, are permitted
+# provided that the following conditions are met:
+#
+#  * Redistributions of source code must retain the above copyright notice, this list of conditions
+#    and the following disclaimer.
+#  * Redistributions in binary form must reproduce the above copyright notice, this list of
+#    conditions and the following disclaimer in the documentation and/or other materials provided
+#    with the distribution.
+#  * Neither the name of the zsh-syntax-highlighting contributors nor the names of its contributors
+#    may be used to endorse or promote products derived from this software without specific prior
+#    written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+# FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+# IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+# -------------------------------------------------------------------------------------------------
+# -*- mode: zsh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*-
+# vim: ft=zsh sw=2 ts=2 et
+# -------------------------------------------------------------------------------------------------
+
+alias a=: b='a | a'
+
+BUFFER='b | b'
+
+expected_region_highlight=(
+  '1 1 alias' # b
+  '3 3 commandseparator' # |
+  '5 5 alias' # b
+)
--- a/highlighters/main/test-data/alias-reuse2.zsh
+++ b/highlighters/main/test-data/alias-reuse2.zsh
@ -0,0 +1,39 @@
+#!/usr/bin/env zsh
+# -------------------------------------------------------------------------------------------------
+# Copyright (c) 2020 zsh-syntax-highlighting contributors
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification, are permitted
+# provided that the following conditions are met:
+#
+#  * Redistributions of source code must retain the above copyright notice, this list of conditions
+#    and the following disclaimer.
+#  * Redistributions in binary form must reproduce the above copyright notice, this list of
+#    conditions and the following disclaimer in the documentation and/or other materials provided
+#    with the distribution.
+#  * Neither the name of the zsh-syntax-highlighting contributors nor the names of its contributors
+#    may be used to endorse or promote products derived from this software without specific prior
+#    written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+# FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+# IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+# -------------------------------------------------------------------------------------------------
+# -*- mode: zsh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*-
+# vim: ft=zsh sw=2 ts=2 et
+# -------------------------------------------------------------------------------------------------
+
+alias a=: b='a && a'
+
+BUFFER='b && b'
+
+expected_region_highlight=(
+  '1 1 alias' # b
+  '3 4 commandseparator' # &&
+  '6 6 alias' # b
+)
--- a/highlighters/main/test-data/alias-reuse3.zsh
+++ b/highlighters/main/test-data/alias-reuse3.zsh
@ -0,0 +1,39 @@
+#!/usr/bin/env zsh
+# -------------------------------------------------------------------------------------------------
+# Copyright (c) 2020 zsh-syntax-highlighting contributors
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification, are permitted
+# provided that the following conditions are met:
+#
+#  * Redistributions of source code must retain the above copyright notice, this list of conditions
+#    and the following disclaimer.
+#  * Redistributions in binary form must reproduce the above copyright notice, this list of
+#    conditions and the following disclaimer in the documentation and/or other materials provided
+#    with the distribution.
+#  * Neither the name of the zsh-syntax-highlighting contributors nor the names of its contributors
+#    may be used to endorse or promote products derived from this software without specific prior
+#    written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+# FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+# IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+# -------------------------------------------------------------------------------------------------
+# -*- mode: zsh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*-
+# vim: ft=zsh sw=2 ts=2 et
+# -------------------------------------------------------------------------------------------------
+
+alias a=: b='a; a'
+
+BUFFER='b; b'
+
+expected_region_highlight=(
+  '1 1 alias' # b
+  '2 2 commandseparator' # ;
+  '4 4 alias' # b
+)
--- a/highlighters/main/test-data/alias-reuse4.zsh
+++ b/highlighters/main/test-data/alias-reuse4.zsh
@ -0,0 +1,42 @@
+#!/usr/bin/env zsh
+# -------------------------------------------------------------------------------------------------
+# Copyright (c) 2020 zsh-syntax-highlighting contributors
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification, are permitted
+# provided that the following conditions are met:
+#
+#  * Redistributions of source code must retain the above copyright notice, this list of conditions
+#    and the following disclaimer.
+#  * Redistributions in binary form must reproduce the above copyright notice, this list of
+#    conditions and the following disclaimer in the documentation and/or other materials provided
+#    with the distribution.
+#  * Neither the name of the zsh-syntax-highlighting contributors nor the names of its contributors
+#    may be used to endorse or promote products derived from this software without specific prior
+#    written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+# FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+# IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+# -------------------------------------------------------------------------------------------------
+# -*- mode: zsh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*-
+# vim: ft=zsh sw=2 ts=2 et
+# -------------------------------------------------------------------------------------------------
+
+alias a=: b='a $(a)'
+
+BUFFER='b $(b)'
+
+expected_region_highlight=(
+  '1 1 alias' # b
+  '3 6 default' # $(b)
+  '3 6 command-substitution-unquoted' # $(b)
+  '3 4 command-substitution-delimiter-unquoted' # $(
+  '5 5 alias' # b
+  '6 6 command-substitution-delimiter-unquoted' # )
+)
--- a/highlighters/main/test-data/alias-reuse5.zsh
+++ b/highlighters/main/test-data/alias-reuse5.zsh
@ -0,0 +1,43 @@
+#!/usr/bin/env zsh
+# -------------------------------------------------------------------------------------------------
+# Copyright (c) 2020 zsh-syntax-highlighting contributors
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification, are permitted
+# provided that the following conditions are met:
+#
+#  * Redistributions of source code must retain the above copyright notice, this list of conditions
+#    and the following disclaimer.
+#  * Redistributions in binary form must reproduce the above copyright notice, this list of
+#    conditions and the following disclaimer in the documentation and/or other materials provided
+#    with the distribution.
+#  * Neither the name of the zsh-syntax-highlighting contributors nor the names of its contributors
+#    may be used to endorse or promote products derived from this software without specific prior
+#    written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+# FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+# IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+# -------------------------------------------------------------------------------------------------
+# -*- mode: zsh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*-
+# vim: ft=zsh sw=2 ts=2 et
+# -------------------------------------------------------------------------------------------------
+
+alias a=: b='a < <(a)'
+
+BUFFER='b < <(b)'
+
+expected_region_highlight=(
+  '1 1 alias' # b
+  '3 3 redirection' # <
+  '5 8 default' # <(b)
+  '5 8 process-substitution' # <(b)
+  '5 6 process-substitution-delimiter' # <(
+  '7 7 alias' # b
+  '8 8 process-substitution-delimiter' # )
+)
--- a/highlighters/main/test-data/alias-self2.zsh
+++ b/highlighters/main/test-data/alias-self2.zsh
@ -0,0 +1,37 @@
+#!/usr/bin/env zsh
+# -------------------------------------------------------------------------------------------------
+# Copyright (c) 2020 zsh-syntax-highlighting contributors
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification, are permitted
+# provided that the following conditions are met:
+#
+#  * Redistributions of source code must retain the above copyright notice, this list of conditions
+#    and the following disclaimer.
+#  * Redistributions in binary form must reproduce the above copyright notice, this list of
+#    conditions and the following disclaimer in the documentation and/or other materials provided
+#    with the distribution.
+#  * Neither the name of the zsh-syntax-highlighting contributors nor the names of its contributors
+#    may be used to endorse or promote products derived from this software without specific prior
+#    written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+# FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+# IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+# -------------------------------------------------------------------------------------------------
+# -*- mode: zsh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*-
+# vim: ft=zsh sw=2 ts=2 et
+# -------------------------------------------------------------------------------------------------
+
+alias cat='cat | cat'
+
+BUFFER='cat'
+
+expected_region_highlight=(
+  '1 3 alias' # cat
+)
--- a/highlighters/main/test-data/block-assignment-no-command.zsh
+++ b/highlighters/main/test-data/block-assignment-no-command.zsh
@ -0,0 +1,38 @@
+#!/usr/bin/env zsh
+# -------------------------------------------------------------------------------------------------
+# Copyright (c) 2022 zsh-syntax-highlighting contributors
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification, are permitted
+# provided that the following conditions are met:
+#
+#  * Redistributions of source code must retain the above copyright notice, this list of conditions
+#    and the following disclaimer.
+#  * Redistributions in binary form must reproduce the above copyright notice, this list of
+#    conditions and the following disclaimer in the documentation and/or other materials provided
+#    with the distribution.
+#  * Neither the name of the zsh-syntax-highlighting contributors nor the names of its contributors
+#    may be used to endorse or promote products derived from this software without specific prior
+#    written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+# FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+# IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+# -------------------------------------------------------------------------------------------------
+# -*- mode: zsh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*-
+# vim: ft=zsh sw=2 ts=2 et
+# -------------------------------------------------------------------------------------------------
+
+BUFFER=$'{ a=42 }'
+
+expected_region_highlight=(
+  '1 1 reserved-word' # {
+  '3 6 assign' # a=42
+  '5 6 default' # 42
+  '8 8 reserved word "issue #854"' # }
+)
--- a/highlighters/main/test-data/null-exec2-printenv.zsh
+++ b/highlighters/main/test-data/null-exec2-printenv.zsh
@ -0,0 +1,38 @@
+#!/usr/bin/env zsh
+# -------------------------------------------------------------------------------------------------
+# Copyright (c) 2021 zsh-syntax-highlighting contributors
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification, are permitted
+# provided that the following conditions are met:
+#
+#  * Redistributions of source code must retain the above copyright notice, this list of conditions
+#    and the following disclaimer.
+#  * Redistributions in binary form must reproduce the above copyright notice, this list of
+#    conditions and the following disclaimer in the documentation and/or other materials provided
+#    with the distribution.
+#  * Neither the name of the zsh-syntax-highlighting contributors nor the names of its contributors
+#    may be used to endorse or promote products derived from this software without specific prior
+#    written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+# FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+# IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+# -------------------------------------------------------------------------------------------------
+# -*- mode: zsh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*-
+# vim: ft=zsh sw=2 ts=2 et
+# -------------------------------------------------------------------------------------------------
+
+BUFFER=$'env | grep $needle'
+
+expected_region_highlight=(
+  '1 3 precommand' # env
+  '5 5 commandseparator' # |
+  '7 10 command' # grep
+  '12 18 default' # $needle
+)
--- a/highlighters/main/test-data/opt-shwordsplit1.zsh
+++ b/highlighters/main/test-data/opt-shwordsplit1.zsh
@ -36,5 +36,5 @@ ed() { command ed "$@" }
 BUFFER=$'$EDITOR'

 expected_region_highlight=(
-  '1 7 function "issue #687"' # $EDITOR
+  '1 7 function' # $EDITOR
 )
--- a/highlighters/main/test-data/parameter-expansion-shwordsplit.zsh
+++ b/highlighters/main/test-data/parameter-expansion-shwordsplit.zsh
@ -0,0 +1,38 @@
+#!/usr/bin/env zsh
+# -------------------------------------------------------------------------------------------------
+# Copyright (c) 2021 zsh-syntax-highlighting contributors
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification, are permitted
+# provided that the following conditions are met:
+#
+#  * Redistributions of source code must retain the above copyright notice, this list of conditions
+#    and the following disclaimer.
+#  * Redistributions in binary form must reproduce the above copyright notice, this list of
+#    conditions and the following disclaimer in the documentation and/or other materials provided
+#    with the distribution.
+#  * Neither the name of the zsh-syntax-highlighting contributors nor the names of its contributors
+#    may be used to endorse or promote products derived from this software without specific prior
+#    written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+# FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+# IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+# -------------------------------------------------------------------------------------------------
+# -*- mode: zsh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*-
+# vim: ft=zsh sw=2 ts=2 et
+# -------------------------------------------------------------------------------------------------
+
+setopt sh_word_split
+local foo='echo foo'
+
+BUFFER='$foo'
+
+expected_region_highlight=(
+  '1 4 builtin' # $foo
+)
--- a/highlighters/main/test-data/parameter-to-global-alias.zsh
+++ b/highlighters/main/test-data/parameter-to-global-alias.zsh
@ -28,8 +28,12 @@
 # vim: ft=zsh sw=2 ts=2 et
 # -------------------------------------------------------------------------------------------------

-alias -g x=y
-local s=x
+if type global_alias >/dev/null; then
+  skip_test="Test is written on the assumption that 'global_alias' is not a valid command name, but that assumption does not hold"
+  return 0
+fi
+alias -g global_alias=y
+local s=global_alias

 BUFFER=$'$s'

--- a/highlighters/main/test-data/precommand-killing1.zsh
+++ b/highlighters/main/test-data/precommand-killing1.zsh
@ -29,11 +29,12 @@
 # -------------------------------------------------------------------------------------------------

 hash sudo=false
+touch foo

-BUFFER='sudo -e /etc/passwd'
+BUFFER='sudo -e ./foo'

 expected_region_highlight=(
  '1 4 precommand' # sudo
  '6 7 single-hyphen-option' # -e
-  '9 19 path' # /etc/passwd
+  '9 13 path' # ./foo
 )
--- a/highlighters/main/test-data/redirection-all.zsh
+++ b/highlighters/main/test-data/redirection-all.zsh
@ -0,0 +1,95 @@
+#!/usr/bin/env zsh
+# -------------------------------------------------------------------------------------------------
+# Copyright (c) 2024 zsh-syntax-highlighting contributors
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification, are permitted
+# provided that the following conditions are met:
+#
+#  * Redistributions of source code must retain the above copyright notice, this list of conditions
+#    and the following disclaimer.
+#  * Redistributions in binary form must reproduce the above copyright notice, this list of
+#    conditions and the following disclaimer in the documentation and/or other materials provided
+#    with the distribution.
+#  * Neither the name of the zsh-syntax-highlighting contributors nor the names of its contributors
+#    may be used to endorse or promote products derived from this software without specific prior
+#    written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+# FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+# IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+# -------------------------------------------------------------------------------------------------
+# -*- mode: zsh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*-
+# vim: ft=zsh sw=2 ts=2 et
+# -------------------------------------------------------------------------------------------------
+
+BUFFER=$': <foo 9<foo <>foo 9<>foo >foo 9>foo >|foo >\!foo >>foo >>|foo >>\!foo <<<foo <&9 >&9 <&- >&- <&p >&p >&foo &>foo >&|foo >&\!foo &>|foo &>\!foo >>&foo &>>foo >>&|foo >>&\!foo &>>|foo &>>\!foo'
+
+expected_region_highlight=(
+  '1 1 builtin' # :
+  '3 3 redirection' # <
+  '4 6 default' # foo
+  '8 9 redirection' # 9<
+  '10 12 default' # foo
+  '14 15 redirection' # <>
+  '16 18 default' # foo
+  '20 22 redirection' # 9<>
+  '23 25 default' # foo
+  '27 27 redirection' # >
+  '28 30 default' # foo
+  '32 33 redirection' # 9>
+  '34 36 default' # foo
+  '38 39 redirection' # >|
+  '40 42 default' # foo
+  '44 45 redirection' # >\!
+  '46 48 default' # foo
+  '50 51 redirection' # >>
+  '52 54 default' # foo
+  '56 58 redirection' # >>|
+  '59 61 default' # foo
+  '63 65 redirection' # >>\!
+  '66 68 default' # foo
+  '70 72 redirection' # <<<
+  '73 75 default' # foo
+  '77 78 redirection' # <&
+  '79 79 numeric-fd' # 9
+  '81 82 redirection' # >&
+  '83 83 numeric-fd' # 9
+  '85 86 redirection' # <&
+  '87 87 redirection' # -
+  '89 90 redirection' # >&
+  '91 91 redirection' # -
+  '93 94 redirection' # <&
+  '95 95 redirection' # p
+  '97 98 redirection' # >&
+  '99 99 redirection' # p
+  '101 102 redirection' # >&
+  '103 105 default' # foo
+  '107 108 redirection' # &>
+  '109 111 default' # foo
+  '113 115 redirection' # >&|
+  '116 118 default' # foo
+  '120 122 redirection' # >&\!
+  '123 125 default' # foo
+  '127 129 redirection' # &>|
+  '130 132 default' # foo
+  '134 136 redirection' # &>\!
+  '137 139 default' # foo
+  '141 143 redirection' # >>&
+  '144 146 default' # foo
+  '148 150 redirection' # &>>
+  '151 153 default' # foo
+  '155 158 redirection' # >>&|
+  '159 161 default' # foo
+  '163 166 redirection' # >>&\!
+  '167 169 default' # foo
+  '171 174 redirection' # &>>|
+  '175 177 default' # foo
+  '179 182 redirection' # &>>\!
+  '183 185 default' # foo
+)
--- a/release.md
+++ b/release.md
@ -1,11 +1,12 @@
 # Release procedure (for developers):

+- Ensure every `is-at-least` invocation passes a stable zsh release's version number as the first argument
 - For minor (A.B.0) releases:
  - Check whether the release uses any not-yet-released zsh features
 - Check open issues and outstanding pull requests
 - Confirm `make test` passes
  - check with multiple zsh versions
-    (easiest to check travis: https://travis-ci.org/zsh-users/zsh-syntax-highlighting/)
+    (easiest to check GitHub Actions: https://github.com/zsh-users/zsh-syntax-highlighting/actions)
 - Update changelog.md
  `tig --abbrev=12  --abbrev-commit 0.4.1..upstream/master`
 - Make sure there are no local commits and that `git status` is clean;
--- a/tests/README.md
+++ b/tests/README.md
@ -104,7 +104,7 @@ By default, the results of all tests will be printed; to show only "interesting"
 results (tests that failed but were expected to succeed, or vice-versa), run
 `make quiet-test` (or `make test QUIET=y`).

-[TAP]: http://testanything.org/
+[TAP]: https://testanything.org/


 Performance test
--- a/zsh-syntax-highlighting.zsh
+++ b/zsh-syntax-highlighting.zsh
@ -73,10 +73,10 @@ _zsh_highlight__is_function_p() {
 # This function takes a single argument F and returns True iff F denotes the
 # name of a callable function.  A function is callable if it is fully defined
 # or if it is marked for autoloading and autoloading it at the first call to it
-# will succeed.  In particular, if a function has been marked for autoloading
-# but is not available in $fpath, then this function will return False therefor.
+# will succeed.  In particular, if F has been marked for autoloading
+# but is not available in $fpath, then calling this function on F will return False.
 #
-# See users/21671 http://www.zsh.org/cgi-bin/mla/redirect?USERNUMBER=21671
+# See users/21671 https://www.zsh.org/cgi-bin/mla/redirect?USERNUMBER=21671
 _zsh_highlight__function_callable_p() {
  if _zsh_highlight__is_function_p "$1" &&
     ! _zsh_highlight__function_is_autoload_stub_p "$1"
@ -100,7 +100,7 @@ _zsh_highlight__function_callable_p() {
 # -------------------------------------------------------------------------------------------------

 # Use workaround for bug in ZSH?
-# zsh-users/zsh@48cadf4 http://www.zsh.org/mla/workers//2017/msg00034.html
+# zsh-users/zsh@48cadf4 https://www.zsh.org/mla/workers/2017/msg00034.html
 autoload -Uz is-at-least
 if is-at-least 5.4; then
  typeset -g zsh_highlight__pat_static_bug=false
@ -123,7 +123,7 @@ _zsh_highlight()
  typeset -r ret

  # $region_highlight should be predefined, either by zle or by the test suite's mock (non-special) array.
-  (( ${+region_highlight} )) || {
+  (( ${+region_highlight[@]} )) || {
    echo >&2 'zsh-syntax-highlighting: error: $region_highlight is not defined'
    echo >&2 'zsh-syntax-highlighting: (Check whether zsh-syntax-highlighting was installed according to the instructions.)'
    return $ret
@ -155,15 +155,7 @@ _zsh_highlight()
        # C structs, so that none of the previous case patterns will match.
        #
        # In either case, fall back to a version check.
-        #
-        # The memo= feature was added to zsh in commit zsh-5.8-172-gdd6e702ee.
-        # The version number at the time was 5.8.0.2-dev (see Config/version.mk).
-        # Therefore, on 5.8.0.3 and newer the memo= feature is available.
-        #
-        # On zsh version 5.8.0.2 between the aforementioned commit and the
-        # first Config/version.mk bump after it (which, at the time of writing,
-        # is yet to come), this condition will false negative.
-        if is-at-least 5.8.0.3; then
+        if is-at-least 5.9; then
          integer -gr zsh_highlight__memo_feature=1
        else
          integer -gr zsh_highlight__memo_feature=0
@ -219,7 +211,8 @@ _zsh_highlight()
  [[ -n ${ZSH_HIGHLIGHT_MAXLENGTH:-} ]] && [[ $#BUFFER -gt $ZSH_HIGHLIGHT_MAXLENGTH ]] && return $ret

  # Do not highlight if there are pending inputs (copy/paste).
-  [[ $PENDING -gt 0 ]] && return $ret
+  (( KEYS_QUEUED_COUNT > 0 )) && return $ret
+  (( PENDING > 0 )) && return $ret

  {
    local cache_place
@ -411,10 +404,7 @@ _zsh_highlight_call_widget()
 #    We check this with a plain version number check, since a functional check,
 #    as done by _zsh_highlight, can only be done from inside a widget
 #    function — a catch-22.
-#
-#    See _zsh_highlight for the magic version number.  (The use of 5.8.0.2
-#    rather than 5.8.0.3 as in the _zsh_highlight is deliberate.)
-if is-at-least 5.8.0.2 && _zsh_highlight__function_callable_p add-zle-hook-widget
+if is-at-least 5.9 && _zsh_highlight__function_callable_p add-zle-hook-widget
 then
  autoload -U add-zle-hook-widget
  _zsh_highlight__zle-line-finish() {
Author	SHA1	Message	Date
Matthew Martin	e0165eaa73	main: Refactor __is_redirection Fixes #942.	2024-01-06 12:36:52 -06:00
Matthew Martin	dcc99a8649	Post-release version number bump.	2023-12-18 16:07:39 -06:00
Matthew Martin	db085e4661	Tag version 0.8.0.	2023-12-18 16:05:43 -06:00
Matthew Martin	9bb3db7fd2	driver: Use stable zsh release in is-at-least calls	2023-12-18 16:02:40 -06:00
Matthew Martin	bb27265aee	CI: Update action versions	2023-10-29 13:25:08 -05:00
Matthew Martin	71bd576af8	CI += zsh 5.9	2023-10-29 13:13:49 -05:00
Matthew Martin	d59ce0fbd0	driver: Be resilient to KSH_ARRAYS being set in the calling scope	2023-10-29 12:53:19 -05:00
Matthew Martin	e82e2d042d	main: precommand_options += ktrace	2023-10-29 12:50:08 -05:00
m0viefreak	0b5b3dcc0c	tests: parameter-to-global-alias: Use alias name less likely to clash	2023-10-27 22:05:00 -05:00
Matthew Martin	f8cd0b55b3	docs: Replace zplug instructions with zinit Fixes #883.	2023-10-25 22:36:04 -05:00
Matthew Martin	1e82d8c83e	changelog: Update through HEAD	2023-10-25 22:11:43 -05:00
Matthew Martin	dd0cf649d1	*: Use https in URLs	2023-10-25 21:33:29 -05:00
Mario P. Cardenas	65071902d3	docs: add instructions to source .zshrc file after package install	2023-10-24 21:15:46 -05:00
Matthew Martin	143b25eb98	docs: Fix Homebrew link Closes #937.	2023-09-05 23:23:07 -05:00
Henry Bley-Vroman	1386f1213e	docs: ZSH_HIGHLIGHT_HIGHLIGHTERS is (main) by default	2023-06-02 22:24:20 -06:00
Johan van Eck	754cefe018	docs: Markup changes only (in the brew installation instructions)	2023-02-05 08:49:34 +00:00
DiegoBoy	75ba3d87e3	Fix proxychains args Args for proxychains should be f:q => -f file : -q quiet. From comments in the same function: # $precommand_options maps precommand name to values of $flags_with_argument, # $flags_sans_argument, and flags_solo for that precommand, joined by a # colon.	2023-02-02 14:57:36 +00:00
Matthew Martin	b2c910a85e	docs: Add Fig instructions Closes #877	2022-11-19 14:30:47 -06:00
Matthew Martin	122dc46439	main: Add cpulimit to precommands Closes #897	2022-09-23 19:33:44 -05:00
inventor500	b828f45da6	main precommands += torsocks	2022-09-24 00:28:28 +00:00
Daniel Shahaf	caa749d030	main: Housekeep $precommand_options. Add -v to tabbed(1).	2022-05-14 18:48:13 +00:00
Daniel Shahaf	c5ce001467	main: Deconfuse $EDITOR Work around <https://github.com/chrisbra/vim-zsh/issues/33>.	2022-02-23 18:48:13 +00:00
Daniel Shahaf	5459ebcc4e	main: precommand_options += grc	2022-02-23 18:19:58 +00:00
Daniel Shahaf	2cd73fcbde	: Update sourceforge links changelog.md: Update links here too. They have not yet appeared in any stable release. Command used: perl -pi -e 's#http://zsh.sourceforge.net#https://zsh.sourceforge.io#g' */(.)	2022-02-22 10:42:31 +00:00
Daniel Shahaf	643717ccaf	changelog: Update zsh version numbers 5.8.0.3 was correct until 5.8.1 was released (see the great-grandparent of this commit, "driver: Bump the in-development is-at-least checks so they return false on zsh 5.8.1, released yesterday"). 5.2 -> 5.3 is simply a typo fix. zle-line-pre-redraw has been available since then.	2022-02-22 10:38:45 +00:00
Nuri Jung	caeca0bf6b	docs: regexp: Document the platform dependency Patch by Nuri Jung; extension to cover PCRE by me. See #747. Fixes #747.	2022-02-22 10:34:43 +00:00
Daniel Shahaf	56b4433461	CI += zsh 5.8.1	2022-02-13 21:33:05 +00:00
Daniel Shahaf	0ddb1a8d51	driver: Bump the in-development is-at-least checks so they return false on zsh 5.8.1, released yesterday. Fixes #856 Fixes #857	2022-02-13 18:03:11 +00:00
Daniel Shahaf	c10808ad5f	main: New test for issue #854	2022-01-31 09:54:57 +00:00
Daniel Shahaf	b392045e6f	driver: Simplify grammar of a comment. No functional change.	2022-01-31 09:54:57 +00:00
Daniel Kuettel	c7caf57ca8	check KEYS_QUEUED_COUNT and PENDING to skip parsing when pasting	2021-11-14 02:45:00 +00:00
Leonardo Gama	1a9264bc66	docs: Add `regexp` to the list of built-in highlighters	2021-09-24 00:40:57 -03:00
Leonardo Gama	f6a22fa842	docs: Change highlighters' URL indexes from numbers to labels	2021-09-24 00:40:39 -03:00
a1346054	6e0e950154	*: Fix spelling Part of PR #832.	2021-08-20 11:30:10 +00:00
Matthew Martin	dffe304567	CI: Pull image from the GitHub container registry	2021-07-03 14:33:17 -05:00
Matthew Martin	f0e6a8ef5c	main: Honor shwordsplit when expanding parameters Closes #687, #818.	2021-06-28 23:02:31 -05:00
Matthew Martin	0e1bb14452	main: precommands += proxychains	2021-05-29 23:24:58 -05:00
Matthew Martin	894127b221	docs,CI: Switch to Libera.Chat	2021-05-20 20:10:34 -05:00
Daniel Shahaf	ebef4e5569	docs: Use SSL for the link to zsh's homepage.	2021-04-14 10:39:18 +00:00
Robert	993a07fc7f	docs: Fix broken link to fish shell	2021-04-14 10:39:18 +00:00
Nikola Knezevic	e8517244f7	main: Allow for "]" in shell aliases PR #776 fixed an issue with complex aliases and expansion. However, this change also introduced a problem with aliases which contain `]` (for example, commonly seen on macOS: `alias ]=open`), due to using an associative array `seen_alias`, indexed by the alias name. Due to `"$seen_alias[$arg]"`, it would fail when `$arg` is expanded to anything containing `]`'. Thus, typing `] /` would result in: ``` > ] / (anon):unset:3: seen_alias[]]: invalid parameter name ``` This change fixes the issue by ensuring we properly access keys in the associative array `seen_alias`. Older versions of zsh have issues with map keys having special characters, especially lacking ways to remove such keys. The issue is described in detail in https://unix.stackexchange.com/questions/626393/in-zsh-how-do-i-unset-an-arbitrary-associative-array-element. This fix uses proposal from [zsh-workers/43269](https://www.zsh.org/mla/workers/2018/msg01073.html), discovered by Stephane Chazelas, that boils down to avoid removing keys from the map, and reconstruct the map anew with some keys omitted. Co-authored-by: @phy1729	2021-03-04 20:29:43 -06:00
Daniel Shahaf	205bc7ea19	'main': Disable a lint warning when env(1) was followed by a pipe. Fixes #797.	2021-03-01 20:21:39 +00:00
Matthew Martin	5eb494852e	Switch to GitHub Actions from Travis	2020-12-25 16:43:50 -06:00
Matthew Martin	75c0eb0717	main: Remember nest level an alias was seen in for seen_alias Fixes #775.	2020-12-25 16:39:07 -06:00
Matthew Martin	046cb03a12	main: Convert in_alias to an array of shift counts No functional change. Keeps track of how deep we are in expanding nested aliases for the next commit.	2020-12-25 16:39:07 -06:00
Hussaina Begum Nandyala	1715f39a46	docs: Add resource link for NetBSD operating system Signed-off-by: Hussaina Begum Nandyala <hexxdump@gmail.com>	2020-11-02 12:18:01 -06:00
Matthew Martin	2ebfa6a598	main: Forget seen aliases when starting a new command Fixes #769	2020-10-12 19:29:53 -05:00
Matthew Martin	aac09942b8	Revert "tests: Add a test that 'rehash' isn't run." This reverts commit `62c5575848`. The test fails when zsh/parameter is available.	2020-10-12 19:28:53 -05:00
Roman Perepelitsa	62c5575848	tests: Add a test that 'rehash' isn't run. See comments within for the rationale. This is a regression test for a regression that was only present in development versions of PR #764 and was never present in master.	2020-08-26 08:47:06 +00:00
Ivo Šmerek	4cf464f843	docs: Update Gentoo link	2020-08-16 13:12:46 +00:00
Daniel Shahaf	6d5372a937	tests: parameter-to-global-alias: Fix a false positive failure when 'x' happens to be a valid external command name. Reported on issue #757 along with other issues.	2020-08-11 09:21:21 +00:00
Daniel Shahaf	e9cad1493f	changelog: Document #712 under the last tag, 0.8.0-alpha1-pre-redrawhook.	2020-08-11 08:42:59 +00:00
m0viefreak	79b6e7e05f	tests: precommand-killing1: Use a dummy path that always exists E.g., on Cygwin /etc/passwd does not necessarily exist.	2020-08-11 08:13:17 +00:00
Daniel Shahaf	3944a44ffe	driver: Fix a version number check to work around a bug in the zsh version whereunder the check should return false. The bug is as follows: % zsh-5.8 -fc 'autoload is-at-least; is-at-least 5.8.0.2 && echo yes \|\| echo no' yes % zsh-5.8 -fc 'autoload is-at-least; is-at-least 5.8.0.2 $ZSH_VERSION && echo yes \|\| echo no' yes This commit deploys the following workaround: % zsh-5.8 -fc 'autoload is-at-least; is-at-least 5.8.0.2 $ZSH_VERSION.0.0 && echo yes \|\| echo no' no Fixes #756.	2020-08-10 07:40:01 +00:00
Matthew Martin	34674d7860	docs: Add OpenBSD port	2020-08-09 13:08:29 -05:00
Matthew Martin	e4d1db1e2c	docs: Sort INSTALL.md	2020-08-09 13:08:29 -05:00
Daniel Shahaf	c14fcad3b0	empty commit: Close redrawhook bugs The parent commit, which merged the feature/redrawhook bug and thereby closed PR #749, also fixed the following issue: Fixes #40. Fixes #90, closes #470. (The latter is a PR for the former.) Fixes #150, closes #151, closes #160. (The latter two are PR's for the first one.) The related issue #183 appears to have been fixed in master. For #150, a different fix for older versions of zsh was considered but has not been implemented. Issue #154 was fixed in xsel(1) in 2017. The parent commit probably fixed that issue for pre-2017 xsel(1). Is #245, #356, and #749. Fixes #245 (redrawhook umbrella issue). Does not reintroduce #257 (comment). Does not reintroduce #259 (comment) Closes #281 as obsolete. Fixes #295. Fixes #324. Fixes #375. Fixes #377. Closes #421 as obsolete. Fixes #520. Unblocks #536 (already milestoned). Fixes #632. Unblocks #635. Milestoned. Unblocks #688. Milestoned. Unblocks administrative issue #655 (already milestoned). (The above is copied from https://github.com/zsh-users/zsh-syntax-highlighting/pull/749#issuecomment-658407330, but repeated here for the sake of github's commit-to-issue linking magic.)	2020-08-09 11:09:19 +00:00
Daniel Shahaf	239c720dec	Merge branch 'feature/redrawhook' * feature/redrawhook: docs: Track making the new codepath conditional upon the 'memo=' feature. On the feature/redrawhook branch, changelog: Add entries for issues fixed by this branch. On the feature/redrawhook branch, change the detection of the 'memo=' feature to avoid a catch-22. driver: Make the redrawhook codepath conditional upon the memo= feature. On the feature/redrawhook branch, move the changelog entry to the current release's section. driver: Fix a bug that prevented subsequent, third-party zle-line-pre-redraw hooks from running. driver: Do not pass widget arguments to _zsh_highlight driver: Clarify comment. No functional change. driver: Allow for -U in autoloaded function definition driver: Use idiomatic module check driver: Make the shadowing $WIDGET read only. driver: Avoid a fork in the common case. test harness: Actually test the new code. driver: Rewrite without a state variable noop: Make a whitespace-only change to reduce noise in the next commit. docs: Rewrap. docs: Update FAQ answer per changes on this branch. redo _zsh_highlight__function_callable_p driver: Use a different way of checking whether add-zle-hook-widget is present. changelog: Use a more specific link. changelog: Note the effect of fixing #245/#90 and an alternative. driver: Pass zle-line-finish arguments on to _zsh_highlight. driver: Hook zle-line-finish. driver: Reimplement using 'add-zle-hook-widget zle-line-pre-redraw' wrappers: Reimplement using Mikachu's zle-line-pre-redraw hook (workers/36650).	2020-08-09 11:00:45 +00:00